SAN FRANCISCO—Web 2.0 start-ups Baynote and Spotplex have selected The Bateman Group as their public relations agency of record. Bateman will provide Baynote and Spotplex with a full spectrum of public relations services, including day-to-day strategic counsel; message development; writing services; corporate brand building; business, IT trade and vertical market media outreach; blogger relations; and thought leadership programs such as speaking and awards pursuits. Baynote offers content guidance software that dynamically displays product and content recommendations on business websites. Spotplex is an online content aggregation service that provides a real-time, impartial ranking of stories using a unique algorithm-based measuring system.